JT-IIT Cement Grinding Aid_Shandong Zhongsen Technology Co., Ltd.

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JT-IIT Cement Grinding Aid

The main components of this series of grinding aids are mainly alcohol amines, polymeric polyols, sugars and other substances, supplemented by a small amount of inorganic salts. They are generally dark tan, non-transparent, non-irritating odor, and do not damage human health and cement. Concrete workability.

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Cement Grinding Aid

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Tel:+86-0531-89731661

E-mail:zhongsen@zhongsenkj.com

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Product Description

Parameters

1. Product introduction

Specifications: 250kg/barrel, ton/barrel, bulk three specifications.

Density: (20℃±1℃): 1.22±0.03(g/cm3)

PH value: (20℃±1℃): 8.25～9.5

Solid content: 35～45（%）

The use of the product in cement does not affect the shelf life of cement

Recommended dosage: 0.05%-0.10% of cement mass (m/m)

2. Scope and performance:

This series of products are mainly suitable for Portland cement, ordinary Portland cement, composite Portland cement, fly ash Portland cement, pozzolanic Portland cement and slag Portland cement, and can also be used for masonry cement .

According to its function, it is divided into early strength type, late strength type, production-increasing type, comprehensive type, retardation type and other products.

Early-strength products, used in the cement production process, can improve the 3-day compressive strength of cement by more than 4.0MPa under the condition that the cement ratio and fineness control indicators are basically the same, and the increase in water demand for standard consistency of cement is less than 0.5%. ;

The post-strength product is used in the cement production process. Under the condition that the cement ratio and fineness control indicators are basically the same, the 28-day compressive strength of the cement can be increased by more than 8.0MPa, and the increase in water demand for the standard consistency of the cement is less than 0.5%. ;

The production-increasing product is used in the process of cement production by tube mill. Under the condition that the cement ratio and fineness control indicators are basically the same, the hourly output of the cement mill can be increased by more than 15%;

Comprehensive product, used in the cement process, under the condition that the cement ratio and fineness control indicators are basically the same, it can reduce the amount of cement clinker by more than 6%, increase the amount of mixed materials in the same proportion, and can increase production by more than 8%. ;

The retarded product is used in the production of retarded cement. When the cement ratio and fineness control indicators are basically the same, the initial setting and final setting time of this grinding aid can be extended by more than 120 minutes, and the cement is 3 days. , 28-day compressive strength increased by more than 0.5MPa.

3. Use examples

As shown in Table 1, P•O 42.5 cement before and after using Zhongsen grinding aids (Ø4.2m×13m combined grinding system in a cement plant in Yunnan)

time	Mixed materials and dosage/%				Total amount of mixed materials/%	Grinding aid/%	SO3/%	LOI/%	Cl-/%	45µm sieve residue/%	Specific surface area m2/kg
time	Limestone	Slag	fly ash	Shale	Total amount of mixed materials/%	Grinding aid/%	SO3/%	LOI/%	Cl-/%	45µm sieve residue/%	Specific surface area m2/kg
Before using grinding aids	7.5	2	0	4	13.5	00	1.8	3.3	0.0	13.9	321
Normal Use Period	8	4.5	1.5	6	20	0.05	1.8	4.3	0.006	12.8	330

Table 2 Performance status of P•O42.5 cement before and after using Zhongsen grinding aid

time	Standard consistency%	Coagulation time/min		Flexural strength /MPa		3-day compressive strength /MPa			28-day compressive strength /MPa
time	Standard consistency%	Initial coagulation	Final coagulation	3 days	28 days	Average	Maximum	Minimum	Average	Maximum	Minimum
Before using grinding aids	26.6	158	208	5.2	8.3	25.9	28.9	24.5	55.2	56.9	53.2
Normal Use Period	27.5	162	220	5.5	8.6	26.9	29.7	26.2	55.4	57.8	54.2

Table 3 The condition of the M32.5 cement before and after using Zhongsen grinding aid (Ø4.2m×13m combined grinding system in a cement plant in Guangxi)

ID	Mixed materials and dosage/%			Total amount of mixed materials/%	Grinding aid/%	SO3%	LOI%	Cl-%	45µm sieve residue/%	Specific surface area㎡/kg
ID	Limestone	volcanic ash	Pyrite slag	Total amount of mixed materials/%	Grinding aid/%	SO3%	LOI%	Cl-%	45µm sieve residue/%	Specific surface area㎡/kg
Blank sample	15	4	11	30	0.0	2.1	8.1	0.013	9.5	396
Test sample	20	4	11	35	0.05	2.1	11.3	0.014	8.8	406

Table 4 Performance of M2.5 cement before and after using Zhongsen grinding aid

ID	Standard consistency%	Coagulation time/min		Mortar fluidity/mm	Water retention rate/%	Compressive strength/MPa
ID	Standard consistency%	Initial coagulation	Final coagulation	Mortar fluidity/mm	Water retention rate/%	3 days	28 days
blank	25.6	252	336	182	87	24.8	46.9
Test sample	25.7	256	333	184	88	26.1	48.5

4. Characteristics of cement using this grinding aid:

1. The fluidity of cement powder will increase;

2. The fluidity of cement mortar increases slightly;

3. The water consumption of the standard consistency is slightly changed (when the amount of the mixture is the same);

4. The coagulation time is slightly extended, the extension time is about 30 minutes, and it can also be adjusted according to customer needs;

5. It is recommended to use 45μm sieve residue to control the grinding fineness, the sieve residue will decrease, but the specific surface area value will not increase.

5. Storage methods and conditions

This series of grinding aids are weak alkaline liquids. It is recommended to use plastic product storage equipment for airtight storage. The storage equipment should be equipped with a circulation device, and the products should be recycled regularly to ensure product uniformity. The recommended storage temperature is -5℃~40℃.

6. How to join when using

You can directly use the metering pump to meter in without raising the addition height;

When it is necessary to increase the feeding height of grinding aid, it is generally added by means of secondary pumping, as shown in the diagram below:

JT-IIT水泥助磨剂

For companies that use our grinding aids, we provide customers with storage tanks and related metering devices and methods of testing and controlling the amount of feed.

7. Precautions

1. This grinding aid should be used after passing the inspection. Acceptance inspection methods are:

1) A relatively simple method is to detect the density, PH value and color, or solid content of the newly arrived grinding aid and the retained sample of the certified grinding aid under the same temperature conditions, when the two are within the error range. It can be considered qualified and put into use within the time limit;

2) Use a kind of additive-free cement with the same proportion as the production cement, and at the same time in the same laboratory, use the retained sample JT-2T of the grinding aid that has been proved to be qualified and the newly arrived grinding aid to sample the cement. Strength blending test, when the three-day strength of the two is within the 5% error range, it is qualified; the first method is generally used when the grinding aid is used continuously, and the second method is used when there is a big difference in the quality of the grinding aid. a method.

2. The barreled grinding aid should be prevented from being dropped, smashed, squeezed by external force and approaching high temperature during handling and storage, and the stacking height should not exceed two barrels;

3. Before use, check the company's logo and then open the cover to confirm that the product and model are correct before putting it into use;

4. This product is slightly corrosive to the skin. After contact with the skin, it should be washed with water, and it should not be eaten by mouth;

5. When using this product, when the ambient temperature is lower than -5°C for 5 consecutive days, insulation measures should be taken to prevent product crystallization from affecting normal use.

6. The shelf life of this product is: 12 months